Build your own sportscar

First, get this book…
http://images-eu.amazon.com/images/P/1859606369.01.LZZZZZZZ.jpg

250 pounds (~$500) is actually possible if you get your steel for free, and find a complete donor car for cheap, but in the real world $2500 is a more realistic target.

Second, visit this site…http://locostusa.com/ It has a lot of info for building the car in the US as the book focuses on donor cars that you can not get in the US. Here is a link to my build diary on that site, that is where the bulk of my updates will be. I will update on NYSpeed at major milestones…http://www.locostusa.com/forums/viewtopic.php?t=922

Next you will need a donor car, there are several options for complete donors, by complete I mean all running gear including engine, tranny, driveshaft, rear axle and brakes, front spindles and brakes, wiring, and other items to make a car. There are not many complete donor cars left, most rear wheel drive small cars with a SLA front suspension would work, however cars with struts can be used but you will either have to modify the strut to accept an upper balljoint, or just get some spindles frome something else.

Popular complete donors in the US are: Pinto, MustangII, Chevette, Miata (if you want to tackle an IRS), many small trucks like Toyota, Mazda, Mitsubishi.

Popular strut based donors: Corolla, B210, RX-7, 240sx, 200sx, and others. The absolute best of these are the Corolla GTS, and the 87-89 Isuzu impulse (good luck finding either one cheap)

There are many others but these are the ones I looked into. You could even use a late model Ranger (99+) with the Mazda 2.3, or even an S10, there are plans out there for larger chassis that can accept V6 engines, but I decided to build the lightest posible car, and I did not feel like waiting to search on a hard to find donor. So I am doing mine in pieces, I bought a FWD donor for the engine, pedals, wiring, steering column, master cylinder, radiator, and a few other parts. I am using the transmission out of a Suzuki Samurai because it bolts right to the engine with no modification, and it only weighs 70lbs…

Donor! Suzuki Swift GT! I got this mainly for it’s sweetheart of an engine. 1.3l DOHC, 100hp stock with lots of aftermarket support. This engine can rev to 9500rpm safely (with a chip as it’s limited to 7600 stock) and with cams, header, and bigger TB 130hp is easy. 9500rpm, 130hp, 1100lb car, WOOO!!! A motorcycle that doesn’t fall over!
http://www.emkayusa.com/locost/Locost08.jpg

The heart…
http://www.emkayusa.com/locost/Locost05.jpg

Other parts stripped out…
http://www.emkayusa.com/locost/Locost11.jpg

Wiring harness, notice the thinner left side, that part is already thinned out
http://www.emkayusa.com/locost/Locost10.jpg

I got the rear axle out of an AWD Tercel, it’s basically the same as in a Corolla but has a 4x110 bolt pattern that matches my Chevette spindles and brakes…
http://www.emkayusa.com/locost/Locost14.jpg

Beginning of the donor parts refurbishing…
http://www.emkayusa.com/locost/Locost15.jpg

The most expensive part of the entire project, but good handling is crutial to me, otherwise, why bother building a Lotus7 replica if it doesn’t handle like a Lotus7? (or better). The book calls for shocks that are 14" long extended ans 10" long compressed, and springs between 180 ans 200lb rear and 200-220 front. However, there is a LOT of debate on this subject, many people seem to think softer in rear and stiffer in front (because of the angle of the shocks). I chose 175 rear and 250 front. I can always order different rates if I’m not happy.
http://www.emkayusa.com/locost/Locost12.jpg

Chevette spindles…
http://www.emkayusa.com/locost/Locost16.jpg

Next, frame construction (already underway, will be posted in a few minutes)

First you need a nice flat, stiff table. 3/4" MDF works nicely. The book describes the frame construction nicely, here is my progress on day 1…

http://www.emkayusa.com/locost/day1.gif

http://www.emkayusa.com/locost/Locost20.jpg

And where the frame stands as of yesterday…
http://www.emkayusa.com/locost/Locost21.jpg

Next step, finish the tranny tunnel and start the A-arms

awesome project man. really awesome.

:tup:

make sure to keep us updated.

will this be taking place of the VW

Damn, you aren’t screwing around with this thing. I wasn’t expecting to see so much progress this soon… :tup:

The easy part is done, just try to keep the forward momentum.

:tup:

wow.

:tup:

Very very cool.

Wow I can’t wait to see how this turns out.

I figured out the ball joints needed to work with the Chevette spindles, the upper joint from a late 60’s GM midsize car (GTO’s and whatnot) works for the lower, and the outer tie rod from a late 60’s VW Beetle works as the upper joint. It was hard to find a lower joint that bolts in, and an upper joint that threads into the A-arms. The only majpr driveline parts I have to get now are the steering rack, (MG Midget will work) and a driveshaft.

http://www.emkayusa.com/locost/Locost22.jpg

looks good. Have you done any frame design analysis or was the frame spelled out in the book? As it sits, right now it looks frame needs a few more key components for rigidity…going back to my days in SAE.

keep updating.

The frame is laid out in the book, and there is another person that published mods to make it twice as stiff, and even more stiffening mods done by Australians to meet their strict rukes. Also, the frame is not done. The 16ga metal floor and tranny tunnel add a lot of stiffness, as will the dash support. The frame plus those mods will be three times as stiff as the original, and weigh 160lbs.

awesome project, keep it posted up, the progress should be great to see!!!

:tup: I love posts like this :slight_smile: Hopefully it’ll go nice and smoothly and we’ll be able to go page to page and see the progress pics to the end!

This thread could be the most worthwhile this forum has ever seen. Look forward to more progress…

wow, thats awesome. i really wanna build a car of my own. maybe when i finish this project…

Wow… looks like alot of fun.

just doesn’t seem safe

Wow mike you made some really fast progress. Good luck with this project.

wow…that is awesome work.

can’t wait to see more!